(19)
(11) EP 0 906 727 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.05.1999 Bulletin 1999/21

(43) Date of publication A2:
07.04.1999 Bulletin 1999/14

(21) Application number: 98810660.5

(22) Date of filing: 13.07.1998
(51) International Patent Classification (IPC)6A23B 7/154, A23B 7/157, A23B 7/10
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.07.1997 US 891885

(71) Applicant: EPL TECHNOLOGIES, INC.
Philadelphia, PA 19113-1507 (US)

(72) Inventors:
  • Gawad, Kamelya I.
    Fresno, California 93704 (US)
  • Gawad, Hesham A.
    Fresno, California 93704 (US)

(74) Representative: Ganguillet, Cyril 
ABREMA Agence Brevets & Marques Ganguillet & Humphrey Avenue du Théâtre 16 Case postale 2065
1002 Lausanne
1002 Lausanne (CH)

   


(54) Compositions and processes for maintaining the integrity of freshly-cut apples


(57) Compositions and processes are disclosed for treating fresh-cut apple pieces by dipping cut apple pieces in an aqueous solution containing GRAS (Generally Recognized As Safe) substances that protect the cut apple pieces from deterioration due to increased enzymatic activity, oxidative reactions, water migration and microbial effects during the extended shelf life of the fresh-cut apples pieces. The composition consists principally of L-cysteine, sorbitol and calcium chloride. A chelator such as sodium hexametaphosphate can be added to enhance the affiance of the agent. Cysteine is present in a concentration of 1.00-4.00 g/l of solution, sorbitol at 2.00 g/l, and calcium chloride at 1.0-10.0 g/l. The ratios of these compounds are altered to meet the different needs of specific apple cultivars, condition of the raw materials and distribution requirements. Apple cultivars that have responded to this treatment in combination with the appropriate modified atmosphere packaging include Empire, Fuji, Granny Smith, Golden Delicious, Red Delicious, Ida Red, Pippin, Rome, and Gravenstein. A synergistic effect is observed when apple pieces are packaged in a film that will equilibrate to oxygen and carbon dioxide levels in the range of 0.5-5.0% and 7.0-37.0%, respectively. The formulation, concentration, treatment parameters, packaging film, and packaging type (e.g. tray, bags) are selected based on the specific cultivar, the quality of the starting raw material, the final product specs, and the distribution channels. Raw material specs are characterized by pressure, starch content, and soluble sugars. The treatment protocol in the processing plant is designed to meet the needs of individual apple processors.





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